ArcGIS refers to a family of GIS software from Esri which includes desktop (ArcReader, ArcMap, ArcCatalog), server applications (ArcGIS Server), mobile devices (ArcPad, ArcGIS Mobile) as well as online services (ArcGIS Online).
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4answers
872 views
Questions on Esri Technical Certification
Starting mid-January you will be able to register for a series of Technical Certifications from Esri and I was interested in doing this, but have not been able to find out too much information about ...
9
votes
1answer
438 views
How to get the size of a file geodatabase feature class on disk?
Is there a simple way to determine the amount of hard drive space a feature class takes up? I feel like I'm missing something simple, but I don't recall a method that does so. You would think that ...
8
votes
2answers
379 views
Which data format typically displays fastest? (ArcMap)
My organization is working on an application running on ArcGIS Engine. Previous versions of the application used primarily Shapefiles for displaying roads, parcels, buildings, etc. Since I was taught ...
5
votes
4answers
973 views
explode overlapping polygons to new non-overlapping features
Given multiple polygons that overlap in multiple ways, I would like to export from this feature all polygons that don't overlap with others iteratively. The product would be a number of features with ...
5
votes
3answers
2k views
Exporting data from 'collect values' output in ArcGIS model builder
I'm currently playing with model builder. I've added a picture of the model I have at the moment.
This model is currently iterating 6 shapefiles, so each of the 'output values' contain 6 figures in a ...
9
votes
4answers
5k views
Is it possible to use Arcpy in ArcGIS 10 to zoom to a selected feature?
The answer to this may be a simple yes or no, but I'm hoping that someone is aware of a way to zoom to the extent of a selected feature using the ArcPy modules in ArcGIS 10.
8
votes
2answers
124 views
Integrating geolocated Twitter posts in ArcGIS
Is it possible to integrate the lat/long data included with Twitter posts (those few that have it enabled of course) into an ArcGIS desktop environment?
I've seen Twitter applications on ArcGIS Online ...
8
votes
2answers
778 views
Export table to X,Y,Z ASCII file via arcpy
I'm looking for a way to export an ArcGIS table (created with the Sample command) to a text file via arcpy. I can do this in ArcGIS via the context menu by right-clicking the table, but have not found ...
3
votes
1answer
176 views
How can I more efficiently select related records?
Below is the code I'm using to replicate the "related tables" button in ArcMap. In ArcMap that button selects features in one feature class or table based on the selection of features in another ...
8
votes
4answers
2k views
How to 'burn' a stream network into a DEM layer in ArcGIS 10?
I am working on a DEM that in an area where there is little relief. I would like to 'burn' the river network into the DEM so I can calculate flow accumulation and flow length accurately. I am using ...
7
votes
7answers
846 views
How to Remove return/newline (\n) character from Field using Python and Field Calculator?
I have a geodatabase table with a field that I'm trying to remove return characters (new line). I found this post (How can I remove (chomp) a newline in Python?) of how to do it, however it is not ...
7
votes
1answer
879 views
How to find the mid-point of a line in arcpy
How can the mid-point of a polyline be calculated using the geoprocessing framework, eg in a Python script?
The polyline.centroid property returns The true centroid if it is within or on the feature; ...
7
votes
5answers
2k views
Can you use ArcGIS Online Base Maps without ESRI Software?
Since the end of January 2011:
"ArcGIS Online map services are
available at no cost regardless of
use." - http://www.esri.com/software/arcgis/arcgisonline/standard-maps.html
However, the ...
2
votes
2answers
2k views
Streetview/Bing Bird's Eye Add-In
I'm trying to create an Add-In for this tool:
Link to Google Maps and Bing from MXD (Streetview and Bird's Eye supported)
I'm not receiving an error however my browser is not opening after I select ...
9
votes
4answers
888 views
comparing two DEMs
i have two Lidar las files, one is original let's say with X points. And the other is copy of the first las file but with Y points, where Y is less than X. Now, i wanted to compare how the Digital ...
8
votes
4answers
4k views
How do I cleanly uninstall ArcGIS 9.3.1 extensions after ArcGIS 9.3.1 is uninstalled?
I uninstalled ArcGIS 9.3.1 (server, desktop, engine), then installed ArcGIS10.0 (Server, Desktop, engine).
When I tried to uninstall some arcmap extensions, I got error 1001 "unable to get installer ...
5
votes
5answers
248 views
How to find the minimum extent of a given pixel value of a raster?
I am wondering if there is a way to find the minimum bounding extent for a raster with a particular value. I clipped a raster from a global image and the extent is set as the global extent with a lot ...
5
votes
2answers
767 views
Reconcile a Versioned Geodatabase with only the DEFAULT version
Follow up to this: Spatial Database Connection String
I am trying to reconcile a versioned geodatabase that has only one version, DEFAULT. I am following the steps from the ESRI documentation: A ...
5
votes
5answers
1k views
Volume of water in a basin with reference to incremental height of DAM
I have a DEM of my area.
I did watershed analysys with archydro.
I want to calculate "Volume of water in a basin with reference to incremental height of DAM"
Is there any method, tool to give output ...
5
votes
2answers
25k views
Export table from ArcGis to Excel file
Is there a way to export a table with selected records to an Excel spreadsheet?
I was trying to export just to .txt file but ArcGIS gives me an error message.
The other problem I have is with ...
4
votes
3answers
2k views
Splitting lines automatically at specific distances?
I have a set of polylines I need to split at varying distances from their starting points. In general I'm looking for a something similar to the SPLIT function within the editor tool. There it is ...
4
votes
1answer
285 views
How does cost allocation work?
Why, when I use the cost allocation function of Spatial Analyst, is space not allocated in all input source locations (as shown in image below)? In particular, the input raster has 18 spots while the ...
4
votes
1answer
476 views
Stream Gradient - Assigning points to their respective Reaches
This is a continuation of the question I initially posed here.
Also, I've attached a shapefile on my db account here.
I'm trying to break a stream network up into 100m reaches, assigning elevation ...
3
votes
2answers
671 views
Accessing ArcGIS layers from seperate thread
I've got an ArcEngine application, referencing a MXD for it's data (and map display). I'm running a query against all layers, so can take quite some time.
I would normally run the query in a ...
3
votes
5answers
689 views
Measuring data load and redraw times in ArcMap
Rephrasing of the question slightly to address some issues.
Is there are standard way of measuring load times for data, specifically sybolised data, within ArcMap?
In particular, we're comparing ...
2
votes
4answers
291 views
ArcInfo Grid ASCII to ESRI Shapefile conversion
I have an ArcGIS grid ascii file (Ramankutty Cropland at 5 minute resolution) that begins as follows:
ncols 4320
nrows 2160
xllcorner -180
yllcorner -90
cellsize ...
2
votes
2answers
310 views
Python problem in conditional combining of multiple rasters and produce one output
I have two rasters for same spatial extent and need to compare both rasters cell by cell and produce one output raster. Each has 10 land cover classes. Based on those 10 classes the comparison should ...
1
vote
1answer
202 views
How to Delete Records from a Feature Layer?
I am trying to delete some records from a feature layer, but I kept getting the error of invalid parameters from the errback.
Below is my code:
function deleteRecords()
{
var incidentId = 2;
var ...
1
vote
1answer
232 views
ArcGis Rest – service name vs. folder - Are the folders always part of the service name?
I'm using an ArcGIS REST map service, and my question is how do I construct the URL to the service? Specifically, what relationship is there between the Service Name, the Test Server, and the folder ...
1
vote
1answer
494 views
How to use multivalue output parameter with ArcPy
how can i use multivalue output parameter with arcpy ? please give an example .
thanks
7
votes
2answers
690 views
Create “Inner Buffer” in ArcGIS
I am currently searching for a possibility to create an "Inner Buffer" in ArcGIS.
I have a lot of polygons (houses)(in one feature class) and one big polygon (in one other feature class). I want so ...
7
votes
2answers
1k views
Rotate features in ArcGIS 10
I have a series of polygons that I want to rotate. Each polygon has a rotate angle field and an anchor point xy coordinate fields. All anchor point xy's are on a node of the polygon. What is the ...
7
votes
9answers
10k views
Is it possible to expose Google Maps as background map through ArcGIS server?
I am doing a (non commercial) project where the client doesn't have the budget for purchasing map data like that provided by TeleAtlas. They only need map data for a background map, and they'd like to ...
6
votes
1answer
119 views
Why are annotation features containing both GraphicElement and TextElement objects not drawing in an ArcGIS Server map service?
I am building annotation features with Python/comtypes/ArcObjects. The annotation works great in ArcMap (10.1), but it is does not draw when published to a map service in ArcGIS Server. Each piece ...
6
votes
4answers
2k views
ArcMap, ArcCatalog very slow to open on a new laptop with ample resources
I have a recent installation or ArcGIS Desktop on a 64 bit Windows 7 Machine, with 8GB ram, intel core i7 processor, and a solid state drive.
It takes ~2 min to open either ArcMap or ArcCatalog from ...
6
votes
5answers
4k views
How do you deal with broken MXD\LYR paths?
In relation to this question,
In the past, whenever I cleaned up a bit and moved layers around (or changed their names) my MXD's paths were broken and it was one pain-in-the-arse to correct them.
...
5
votes
2answers
68 views
How to enumerate join values with ArcGIS?
I have two shape files (e.g. postal code areas and cities) which I want to join based on an id that both shape files have in common (the id would be the city name in this example). Joining the two ...
5
votes
2answers
752 views
Retain ESRI symbology in Mapinfo TAB
Is there anyway to retain/easily transfer symbology from ESRI to Mapinfo? The only process I found was posted in 2010 - https://groups.google.com/group/mapinfo-l/browse_thread/thread/883223ff4ae56809 ...
4
votes
2answers
394 views
clipping a raster by multiple datasets or polygons
another newbie question from me.
I would like to clip a DEM using a grid of polygons. It's probably easier to use multiple polygons in one shape file, but I haven't managed this so I'm trying to use ...
4
votes
3answers
2k views
Creating a square buffer around a point feature in ArcMap
I would like to create a square buffer from a point feature. I do not understand the code that gos into it. This similar questions as asked on the forums.esri website but that was over 10 years ago. ...
4
votes
4answers
1k views
How to split a shapefile into separate files for each feature?
I have a polyline shape files with about 20 kinds of roads.
I would like to know how can I create automatically a vector file for each one.
I can use Arcgis, Qgis (or Gdal separately).
thanks!
4
votes
1answer
284 views
Need to delete all but one feature from a set of features with the same ID, keeping the one with the largest area
I have a large polygon layer in which most of the polygons have a unique name in a text field. Of the hundreds that aren't unique, there will be 2-4 polygons with the same name but different ...
4
votes
1answer
656 views
How can I write a python script for repairing broken links in ArcGIS 10 for different new paths of layers or shapefiles?
I have an .mxd with broken link layers and each layer has a different new path.
I know the python script for repairing the broken links of the layers, but I want to put all the new paths of the layers ...
4
votes
2answers
1k views
Simplify Raster Contours ArcGIS 10
Does anybody know a way to simplify a number of contour polylines derived from a raster dataset? I need to generate a map that shows contour polylines at relatively small scale. With the contour ...
4
votes
1answer
832 views
How do I get the count of NoData values in a raster?
I have created a raster in ArcGIS 10 with a large number of holes (NoData) in it. I want to fill the holes using something like the the following:
rOut = arcpy.sa.Con(arcpy.sa.IsNull(rGround),
...
4
votes
5answers
7k views
For every point, distance to nearest polygon of type X?
In ArcGIS how might one calculate as an attribute value the distance to the nearest polygon of type X? Say we have a point layer of wildlife observations and we want to know how far each of them is ...
4
votes
2answers
841 views
compound variables in model builder?
I'm trying to create a model wherein one of the parameters is a compound variable, that is made of multiple variables joined together. How can this be done?
For Example: Create an insider buffer ...
3
votes
3answers
196 views
How to perform a join on simultaneous spatial and attribute criteria in ArcGIS?
I have two point layers and want to perform a spatial join on nearest distance.
Normally it is easy with ArcMap. But now I have a restricting condition on the spatial join. The restriction only ...
3
votes
1answer
158 views
Is there a (better) way to debug Visual Basic Code Block in calculate field using ArcGIS?
From time to time, I have to use Visual Basic in Calculate field.
As the code get bigger, the more complicated is to debug it. And ArcGIS (9.3) does not help as the error messages are, in the best ...
3
votes
3answers
195 views
Buffer with physical barrier
I don't think is possible, but I'm looking for a way to stop my buffer at a certain physical barrier. For example, I have point near a river and I'm creating a buffer around my point that is larger ...
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